<?php
/**
 * Smarty Internal Plugin Compile Function
 *
 * Compiles the {function} {/function} tags
 *
 * @package Smarty
 * @subpackage Compiler
 * @author Uwe Tews
 */

/**
 * Smarty Internal Plugin Compile Function Class
 *
 * @package Smarty
 * @subpackage Compiler
 */
class Smarty_Internal_Compile_Function extends Smarty_Internal_CompileBase {
	
	/**
	 * Attribute definition: Overwrites base class.
	 *
	 * @var array
	 * @see Smarty_Internal_CompileBase
	 */
	public $required_attributes = array ('name' );
	/**
	 * Attribute definition: Overwrites base class.
	 *
	 * @var array
	 * @see Smarty_Internal_CompileBase
	 */
	public $shorttag_order = array ('name' );
	/**
	 * Attribute definition: Overwrites base class.
	 *
	 * @var array
	 * @see Smarty_Internal_CompileBase
	 */
	public $optional_attributes = array ('_any' );
	
	/**
	 * Compiles code for the {function} tag
	 *
	 * @param $args array
	 *       	 array with attributes from parser
	 * @param $compiler object
	 *       	 compiler object
	 * @param $parameter array
	 *       	 array with compilation parameter
	 * @return boolean true
	 */
	public function compile($args, $compiler, $parameter) {
		// check and get attributes
		$_attr = $this->getAttributes ( $compiler, $args );
		
		if ($_attr ['nocache'] === true) {
			$compiler->trigger_template_error ( 'nocache option not allowed', $compiler->lex->taglineno );
		}
		unset ( $_attr ['nocache'] );
		$save = array ($_attr, $compiler->parser->current_buffer, $compiler->template->has_nocache_code, $compiler->template->required_plugins );
		$this->openTag ( $compiler, 'function', $save );
		$_name = trim ( $_attr ['name'], "'\"" );
		unset ( $_attr ['name'] );
		// set flag that we are compiling a template function
		$compiler->compiles_template_function = true;
		$compiler->template->properties ['function'] [$_name] ['parameter'] = array ();
		$_smarty_tpl = $compiler->template;
		foreach ( $_attr as $_key => $_data ) {
			eval ( '$tmp=' . $_data . ';' );
			$compiler->template->properties ['function'] [$_name] ['parameter'] [$_key] = $tmp;
		}
		$compiler->smarty->template_functions [$_name] ['parameter'] = $compiler->template->properties ['function'] [$_name] ['parameter'];
		if ($compiler->template->caching) {
			$output = '';
		} else {
			$output = "<?php if (!function_exists('smarty_template_function_{$_name}')) {
    function smarty_template_function_{$_name}(\$_smarty_tpl,\$params) {
    \$saved_tpl_vars = \$_smarty_tpl->tpl_vars;
    foreach (\$_smarty_tpl->smarty->template_functions['{$_name}']['parameter'] as \$key => \$value) {\$_smarty_tpl->tpl_vars[\$key] = new Smarty_variable(\$value);};
    foreach (\$params as \$key => \$value) {\$_smarty_tpl->tpl_vars[\$key] = new Smarty_variable(\$value);}?>";
		}
		// Init temporay context
		$compiler->template->required_plugins = array ('compiled' => array (), 'nocache' => array () );
		$compiler->parser->current_buffer = new _smarty_template_buffer ( $compiler->parser );
		$compiler->parser->current_buffer->append_subtree ( new _smarty_tag ( $compiler->parser, $output ) );
		$compiler->template->has_nocache_code = false;
		$compiler->has_code = false;
		$compiler->template->properties ['function'] [$_name] ['compiled'] = '';
		return true;
	}

}

/**
 * Smarty Internal Plugin Compile Functionclose Class
 *
 * @package Smarty
 * @subpackage Compiler
 */
class Smarty_Internal_Compile_Functionclose extends Smarty_Internal_CompileBase {
	
	/**
	 * Compiles code for the {/function} tag
	 *
	 * @param $args array
	 *       	 array with attributes from parser
	 * @param $compiler object
	 *       	 compiler object
	 * @param $parameter array
	 *       	 array with compilation parameter
	 * @return boolean true
	 */
	public function compile($args, $compiler, $parameter) {
		$_attr = $this->getAttributes ( $compiler, $args );
		$saved_data = $this->closeTag ( $compiler, array ('function' ) );
		$_name = trim ( $saved_data [0] ['name'], "'\"" );
		// build plugin include code
		$plugins_string = '';
		if (! empty ( $compiler->template->required_plugins ['compiled'] )) {
			$plugins_string = '<?php ';
			foreach ( $compiler->template->required_plugins ['compiled'] as $tmp ) {
				foreach ( $tmp as $data ) {
					$plugins_string .= "if (!is_callable('{$data['function']}')) include '{$data['file']}';\n";
				}
			}
			$plugins_string .= '?>';
		}
		if (! empty ( $compiler->template->required_plugins ['nocache'] )) {
			$plugins_string .= "<?php echo '/*%%SmartyNocache:{$compiler->template->properties['nocache_hash']}%%*/<?php ";
			foreach ( $compiler->template->required_plugins ['nocache'] as $tmp ) {
				foreach ( $tmp as $data ) {
					$plugins_string .= "if (!is_callable(\'{$data['function']}\')) include \'{$data['file']}\';\n";
				}
			}
			$plugins_string .= "?>/*/%%SmartyNocache:{$compiler->template->properties['nocache_hash']}%%*/';?>\n";
		}
		// remove last line break from function definition
		$last = count ( $compiler->parser->current_buffer->subtrees ) - 1;
		if ($compiler->parser->current_buffer->subtrees [$last] instanceof _smarty_linebreak) {
			unset ( $compiler->parser->current_buffer->subtrees [$last] );
		}
		// if caching save template function for possible nocache call
		if ($compiler->template->caching) {
			$compiler->template->properties ['function'] [$_name] ['compiled'] .= $plugins_string . $compiler->parser->current_buffer->to_smarty_php ();
			$compiler->template->properties ['function'] [$_name] ['nocache_hash'] = $compiler->template->properties ['nocache_hash'];
			$compiler->template->properties ['function'] [$_name] ['has_nocache_code'] = $compiler->template->has_nocache_code;
			$compiler->template->properties ['function'] [$_name] ['called_functions'] = $compiler->called_functions;
			$compiler->called_functions = array ();
			$compiler->smarty->template_functions [$_name] = $compiler->template->properties ['function'] [$_name];
			$compiler->has_code = false;
			$output = true;
		} else {
			$output = $plugins_string . $compiler->parser->current_buffer->to_smarty_php () . "<?php \$_smarty_tpl->tpl_vars = \$saved_tpl_vars;}}?>\n";
		}
		// reset flag that we are compiling a template function
		$compiler->compiles_template_function = false;
		// restore old compiler status
		$compiler->parser->current_buffer = $saved_data [1];
		$compiler->template->has_nocache_code = $compiler->template->has_nocache_code | $saved_data [2];
		$compiler->template->required_plugins = $saved_data [3];
		return $output;
	}

}

?>